摘要
研究了２，４－二氯苯基荧光酮（ＤＣＰＦ）在表面活性剂ＣＴＭＡＢ存在下与钨形成三元胶束络合物的反应条件．在强酸性介质中生成Ｗ（Ⅵ）：ＤＣｌＰＦ＝１：２的络合物，其最大吸收峰在５２２ｎｍ波长处，表现摩尔吸光系数ε为１．３５×１０￣５Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）、钨含量在０～１０μｇ／２５ｍｌ范围内符合比尔定律，大多数常见的阳离子不干扰钨的测定，拟定方法用于合金钢中微量钨的测定，结果满意。
The colour reaction of tungsten (Ⅵ) with 2,3,7-trihydroxy-9-(2,4-dichlor)phenylfluone (DCIPF)in the presence of CTMAB has been investigated.Tungsten (Ⅵ)reacts rapidly with DCIPF to form a ternary micelle complex[W (Ⅵ): DClPF=1 : 2]with maximum absorption at 522nm,its molar absorptivity being 1.35 ×10￣5. Beer's law is obeyed for 1-10μg of tungiten(Ⅱ)in 25ml. Most of other metal ions do not interfere with the detrmination.The method has been used to determine tungsten in steel with satifactory results.
出处
《冶金分析》
CAS
CSCD
北大核心
1996年第4期20-21,共2页
Metallurgical Analysis
关键词
分光光度法
钨分析
合金钢
DCIPF
Spectrophotometry,Tungsten(Ⅵ), 2,3,7-Trihydroxy-9-(2,4-dichlor)phenylfluorone
